HP Pavilion dv4 Maintenance And Service Manual page 86

6. Disconnect the following cables from the system board:
(1) Display panel cable (included with the display assembly and display panel spare part kit)
(2) Optical drive connector cable (included with the optical drive connector cable spare part kit)
(3) Audio/USB board cable (included in the Cable Kit, spare part number 652696-001)
(4) Power connector cable (included in the power connector cable spare part kit)
7. Remove the three Phillips PM2.5×5.0 screws (1) that secure the system board to the
base enclosure.
8. Lift the right side of the system board (2) until it rests at an angle.
78 Chapter 4 Removal and replacement procedures